Compact roof ventilators



Oct. 22, 1963 E. RUDY 3,107,598

COMPACT ROOF VENTILATORS Filed Jan. 31, 1961 INVENTOR Rudy United States Patent 3,107,598 COMPACT ROOF VENTHIATORS Emil Rudy, Cleveland, Ohio, assignor to Loren Cook Company, a corporation of Ohio Filed Jan. 31, 1961, Ser. No. 86,026 9 Claims. (c1. 9s 42 The present invention relates to roof ventilators of the gravity type and more particularly to a compact ventilator of such type that is of considerably less height than the usual gravity type ventilators and in which the upper portions of the side walls of the ventilator, the downwardly extending portions of the top wall of the ventilator, and bafile means consisting of one or more baflles interposed between each side wall and the outwardly and downwardly extending side portions of the top wall, are arranged in a manner to break up and deflect weather elements, such as rain, snow or ice, and to prevent their entrance through the throat of the ventilator into the building to which the ventilator is applied.

At the present time buildings, such as factories and particularly school houses, are being erected which are only a single story in height. For esthetic reasons, it is de sirable to provide a roof ventilator for such buildings which extends only a short distance above the building. Ventilators that are low and compact are also less subject to damage by the wind than ventilators which protrude to a greater height. According to the present in vention, an improved roof ventilator of the gravity type is provided including a pair of side walls, each having an upper portion which is inclined inwardly toward the longitudinal axis of the ventilator, a top wall having side wall portions which are inclined downwardly and outwardly relative to the longitudinal axis of the ventilator, one of which is substantially parallel to the upper portion of one of the side walls and the other of which is substantially parallel to the upper portion of the other side wall, and in which baffle means consisting of one or more baflles are connected to and are arranged to extend substantially parallel to the upper portion of one of the side walls and to one of the side wall portions of the top wall and one or more of which are connected to and are arranged to extend substantially parallel to the upper portion of the other side wall and to the other side wall portion of the top wall. The side wall, top wall, and baflles of my improved ventilator are arranged to provide sufliciently large passages between the baflles and between the outermost bafiies and the side walls, and between the innermost baflies and the top wall to enable a comparatively large amount of air to be ventilated from the building and because of the compactness and the manner in which the parts of the ventilator are secured together, a strong structure is provided which is of less height than ventilators of the gravity type that have heretofore been provided. In accordance with my invention, the lower portion of one of the side walls of the ventilator is inclined downwardly and inwardly toward the longitudinal axis of the ventilator and is connected to but is spaced from one side wall of the throat and the other side wall is also inclined downwardly and inwardly toward the longitudinal axis of the venilator and is connected to but is spaced from the opposite side wall of the throat to provide openings through which rain water, or water formed from snow or ice, that impinge upon the bafiles and upon the inner faces of the inclined portions of the side walls and the outer surfaces of the inclined side wall portions of the top wall, may be drained. Means are also provided to prevent air which passes upwardly through the drain openings from causing a back draft through the throat of the ventilator into the building to which the Ventilator is applied and because in my improved venti- 'ice lator, the upper portion of each of the side walls extends upwardly and is inclined inwardly toward the axis of the ventilator and is parallel with one or more baffles and one of the inclined portions of the top Wall, air impinging upon and flowing upwardly along the upper portions of the side walls of the ventilator induces the outward flow of air from within the ventilator.

It is therefore an object of the present invention to provide an improved ventilator including a throat, a centrally disposed top wall having side walls which extend downwardly and outwardly over the throat and which are arranged between and in spaced relation to a pair of oppositely disposed side walls having upper portions inclined upwardly and inwardly toward the longitudinal axis of the ventilator, and baffle means consisting of one or more baflles arranged in substantially parallel relation to each of the downwardly extending side wall portions of the top wall and upwardly and inwardly inclined upper portions of the respective side walls, to provide a combined wall and baflle structure which is of less height than the usual roof ventilator and in which the walls and battles are in sufficiently close relation to each other to effectively break up and deflect weather elements, such as rain, snow, or sleet away from the throat of the ventilator.

Another object of the invention is to provide a ventilator including a throat, a top wall, baifles arranged between the oppositely disposed side Walls of the ventilator and the top wall which cooperate with downwardly extending side wall portions of the top wall and inwardly inclined upper portions of the side walls to deflect rain or melted snow or ice away from the throat of the ventilator and on to lower portions of the side walls which are inclined downwardly and inwardly relative to the longitudinal axes of the ventilator and which are connected in spaced relation to the side walls of the throat to provide drain openings and in which means are provided to prevent air passing through the drain openings from causing a back draft through the throat of the ventilator into the building to which the ventilator is applied.

A further object of my invention is to provide a ventilator of the roof type including a throat, a top wall having downwardly and outwardly inclined side wall portions, oppositely disposed side walls spaced from the top wall, and bafile means consisting of one or more baflles arranged in the space between the top wall and each side wall for deflecting weather elements, such as rain, melted snow or ice, away from the throat of the ventilator and to provide passages for air between the bafiies and between the batlies and each side wall portion of the top wall, and the baffies and each of the side walls of the ventilator, and in which the upper portions of each of the side walls of the ventilator is inclined upwardly and inwardly so that air flowing upwardly along the upper portion of each of the side walls of the ventilator induces the outward flow of air from within the ventilator.

My invention will be better understood by reference to the accompanying drawings in which:

FIG. 1 is a perspective view of my improved ventilator;

FIG. 2 is a side elevational view of the ventilator with parts broken away to show underlying structure;

FIG. 3 is a cross sectional view taken on a plane passing through the line 33 of FIG. 2, looking in the direction of the arrows; and

FIG. 4 is an enlarged cross sectional view taken on a plane passing through the line 44 of FIG. 3, looking in the direction of the arrows.

As shown in the drawings, my improved ventilator includes a longitudinally extending base portion 1 which is designed to be placed over a roof curb of the usual type and a throat having side walls 2. and 2a extending upwardly from the base portion which also serve as a support for the upwrdly extending parts of the ventilator.

The ventilator includes oppositely disposed side walls having vertically extending portions 3 and 3a, respectively, a top wall having side wall portions 5 and 5a which are inclined downwardly and outwardly relative to the longitudinal axis of the ventilator, a pair of spaced downwardly inclined baflles 6 and 7 arranged on one side of the top wall and extending substantially parallel to the downwardly inclined side wall portion 5 and a pair of spaced downwardly inclined baflles 6a and 7:: arranged on the opposite side and extending substantially parallel to the inclined side wall portion 5a of the top wall.

To provide a compact structure in which weather elements, such as rain, snow and sleet, may be deflected away from the throat of the ventilator, the upper portions 8 and 8a of the side walls are inclined inwardly toward the longitudinal axis of the ventilator, the upper portion 8 being arranged to extend substantially parallel to batfles 7 and 6 and side wall portions 5 of the top wall and the portion 8:: being arranged to extend substantially parallel to bafiles 7a and 6a and side wall portion 5a of the top wall, and to enable rain and melted ice and snow to be drained from the ventilator, the lower portion 9 of one of the side walls is inclined downwardly and inwardly relative to the longitudinal axis of the ventilator and terminates in a downwardly extending flange which is connected to the side wall 2 of the throat by suitable means, such as bolts 10, and the lower portion of the side wall 9a is inclined downwardly and inwardly relative to the longitudinal axis of the ventilator and is connected to the side wall 2a of the throat by suitable means, such as bolts Mia. The downwardly extending flanges on the lower portions 9 and 9a of the side walls are maintained in spaced relation to the side walls 2 and 2a of the threat by spacers 11 to provide drain openings 12 through which water from rain or melted snow and ice flows from the ventilator, and to prevent air passing upwardly through the drain openings from entering the ventilator and causing a back draft through the throat of the ventilator into the building, each of the side walls of the throat terminates in a downwardly extending channel-shaped portion 13, one of which overlies one of the drain openings and the other of which overlies the other drain opening. 7

Means are also provided for deflecting air drawn from the building through the ventilator so that part of the air will flow through the passages between side wall portion 8 and baifle 7, between baffles 7 and 6, and baflle 6 and side wall portion 5 of the top wall and part of the air will flow through passages between side wall portion 8a and bathe 7a, between balfles 7a and 6a, and between bafiie 6a and side wall 5a as indicated by the arrows. As shown, the deflector includes a central longitudinal edge portion 14 which extends downwardly approximately midway between the side walls 2 and 2a of the throat, a side wall portion 35 which is tapered outwardly and upwardly in one direction relative to the longitudinal axis of the ventilator and a side wall portion 15a which is tapered outwardly and upwardly in the opposite direction relative to the longitudinal axis of the ventilator and suitable means are provided for supporting the deflector and the top wall, and for bracing the ventilator parts. As shown, a plurality of spaced vertical bars 16 and 16a are secured to the web of the channel-shaped portion 13 of each side wall of the throat by suitable means, such as bolts 17 and 17a, respectively, and the upper end of each of the braces terminates in an inwardly extending flange upon which rests the outwardly extending margins of walls 35 and 15a, respectively. For supporting the top wall, the downwardly extending side wall 5 is provided with a portion which extends radially outwardly relative to the longitudinal axis of the ventilator and rests upon the outer margin of wall 15 and the side wall 5:: is provided with a portion whichextends radially outwardly in the opposite direction and rests upon the outer margin of 4 wall 5a and to further strengthen the structure, spaced braces 18 and 18a are provided, each brace 13 having a downwardly extending flange at its outer portion which is connected to the upper end margin of wall portion 3 by suitable means, such as bolts 19, and its inner margin overlies the margin of wall 5, and the inner margin of each of the braces 18, the radial portion of side wall 5 and the outer margin of wall 15 are connected together by suitable means, such as bolts 20, and in a like manner, each brace 18a has a downwardly extending flange which is connected to the upper margin of side wall portion 3a by suitable means, such as bolts 19a and its inner margin extends over the radial portion of side wall 5a and the parts are connected together by bolts 20a which extend through the inner margin of each of the braces 18a, the

radial extending portion of side wall 5a and the outer margin of deflector wall 15a. To enable water impinging on walls 5 and 5a, or water from melted snow or ice that forms thereon, from passing into the ventilator,

the radially extending portions of walls 5 and 5a are a each provided with flanges 21 and 21a, respectively, which extend downwardly and outwardly relative to the longitudinal axis of the ventilator to direct the water on to the downwardly and inwardly inclined portions 9 and 9a of the side walls of the ventilator.

To still further strengthen the structure, baffles 7 and 6 are each provided with outwardly extending flanges at their lower end portions which are secured to braces 18 by suitable means, such as bolts, and battles 6a and 7a have outwardly extending flanges at their lower ends which are secured to braces 18a by similar means. Means are also provided to strengthen the upper portion of the ventilator. For this purpose, the upper side walls and each of the baflles are provided with flanges extending outwardly relative to the longitudinal axis of the ventilator and spaced bars are secured by suitable means, such as bolts 22, to outwardly extending flanges on side wall portions 8 and 3a, to flanges on baffles 6 and 7 which extend outwardly in one direction from the longitudinal axis of the ventilator, to flanges 6a and 7a which extend outwardly in the opposite direction relative to the longitudinal axis of the ventilator, and to the top wall 4.

My improved ventilator is also provided with end walls 23 and 23a, each of which has inwardly extending top and side flanges 24 and 25, respectively, and means are provided for draining any water that flows downwardly along each of the end walls on to the downwardly inclined portion of one of the side walls and while any desirable means may be provided for this purpose, as shown an angularly-shaped member is secured to each of the end walls. Each of the angularly-shaped members consists of a downwardly extendign flange 26 secured to the respective end walls by suitable means, such as rivets, and an singularly-shaped portion 27 which is spaced outwardly from the respective end walls to provide a trough at each end of the ventilator for directing water flowing down the inner surface of each end wall on to one of the downwardly and inwardly inclined side wall portions.

In my improved ventilator, louvers are also provided to close the ventilator to prevent loss of heat during the winter months and a motor 28 is provided for opening the louvers when it is desired to exhaust air from the build-- ing. As shown more particularly in FIGS. 2 and 3, a frame 29 consisting of oppositely disposed side walls, each of which terminates in end and bottom flanges, is provided which is maintained in place by the inwardly extending flanges of angular portions 30, the upwardlyex: tending flange of each of which is secured to the respective side and end walls of the throat and extending acrossthe frame are rods 31 upon each of which is mounted a louver 32. Each of the louvers has an angularly-shaped mem ber 33 secured thereto which in turn is pivotally secured to a bar 34- and a link 35 having one end connected to the bar has its opposite end connected to an arm 36 secured to the shaft of the motor 28 and when the motor is energized, the arm 36 secured to the shaft of the motor is rotated to a position in which the link 35 raises the louvers to their open position which position is limited by a stop 37. As shown in FIG. 3, the opposite ends of each of the rods is rotatably mounted in bearings 38, each of which is secured to the respective side walls of frames 29. Means are also provided for returning the louvers to their closed position and while any suitable means may be provided for this purpose, as shown, resilient means, such as a spring 3-9, has one end connected to the arm 36 and its opposite end is connected to an arm secured to and extending inwardly toward the transverse axis of the ventilator from the motor. When the louvers are moved to their open position by motor 28, sufficient tension is placed upon spring 39 to return the louvers to their closed position when the motor is deenergized.

To provide efiicient ventilation of air from the building, the space between side wall portion 8 and baifle 7 and side wall portion 8a and baflle 7a, is wider than the spaces between baflles 7 and 6 and baflies 7a and 6a, and the spaces between baftles 7 and 6 and baflles 7a and 6a, is wider than the space between baffle 6 and side wall portion 5 of the top wall and baflie 6a and side Wall portion 5a of the top wall, and consequently most of the air will pass outwardly from the building between side wall portions 8 and 8a and baflies 7 and 7a, respectively, and between baifles 7 and 6 and bafiies 7a and 6a, and because the side wall portions 8 and 3a are inclined inwardly toward the axis of the ventilator, air flowing upwardly along the outer sides of the upper portion of the side Walls of the ventilator induces the outward flow of air from within the ventilator. It is also apparent that because of the number of baflies interposed between the side portions of the top wall and the inwardly inclined portions of the respective side walls, comparatively large passages are provided for the egress of air and because of the compactness and comparatively low height of my improved ventilator and the manner in which the parts are braced, the ventilator is particularly resistant to the force of strong winds which may be directed against it.' The bafiies, however, should be in sufficiently close relation to the outer walls and the side wall portions of the top wall to break up and deflect rain and other weather elements which impinge on the walls and baifles. As a specific example which is not to be considered in any manner as a limitation on the present invention, the distance between the upper side wall portion 8 and battle 7 and side wall portion 8a and baflie 7a may be approximately 9 /2 inches, the distance between baflles 7 and 6 and 7a and 6:: may be approximately 7 inches, and the distance between the inner baflie 6 and the side wall portion 5 of the top wall and the inner baflie 6a and side wall portion 5a of the top wall, may be approximately 4% inches. I have found that when the baflies and side wall portions are arranged in such relation, passages of sutficient width are provided between the walls and baflles and between the batfles to permit the free egress of air and in such case, the baflies and Walls are in sufliciently close relation to each other to break up and deflect rain and other weather elements which impinge upon the walls and baflles.

What is claimed is: g

.-1. A roof ventilator including a throat, oppositely disposed first and second side walls spaced outwardly from said throat and arranged on opposite sides of the axis of the ventilator, the upper portion of each of which is inclined inwardly toward the axis of the ventilator so that air passing upwardly against the outer sides or" the upper wall portions aid in causing the egress of air from the building, a top wall including a flat wall portion, a downwardly and outwardly inclined first side wall portion which is substantially parallel to the inwardly inclined upper portion of the first side wall and a downwardly and outwardly inclined second wall portion which is substantially parallel to the inwardly inclined upper portion of the second side wall, baflie means arranged between and extending substantially parallel to the inwardly inclined upper portion of the first side wall and the first side wall portion of the top wall and being substantially coextensive therewith, and baflie means arranged between and extending substantially parallel to the inwardly inclined upper portion of the second side wall and the second side wall portion of the top wall and being substantially coextensive therewith, said baflle means and side wall portions being spaced at a suflicient distance from each other to provide comparatively large passages for the egress of air on each side of the longitudinally extending axis of the ventilator but being in sufliciently close relation to each other to deflect rain and other weather elements away from the throat of the ventilator, and an air deflector having a lower longitudinally extending edge portion substantially centrally of the throat, a first side wall inclined upwardly and outwardly to 'a position below the first downwardly inclined portion of the top wall for directing air toward the egress passages on one side of the axis of the ventilator, and a second side wall portion which is inclined upwardly and outwardly to a position below the second downwardly inclined portion of the top wall for directing air toward the egress passages on the opposite side of the axis of the ventilator.

2. A roof ventilator as defined in claim 1 in which means is provided for supporting the top wall including side Walls arranged adjacent to a longitudinally extending opening in the ventilator and forming the side walls of the throat, a plurality of braces connected to and extending upwardly from each side wall of the throat, each of which terminates in a flange and in which one side wall of said deflector has its outer margin resting upon the flanges of the braces connected to one side wall of the throat and in which the other side wall of the deflector has its outer margin resting upon the flanges of the braces connected to the other side wall of the throat and in which the first side wall portion of the top wall has a radially extending portion resting upon the outer margin of the first wall of the deflector and the other side wall portion of the top wall has a radially extending portion resting upon the outer margins of the second Wall of the deflector, means for connecting the radially extending portions of the first side of the top wall and the outer margin of the first wall of the deflector together and to the braces connected to one side wall of the throat, means for connecting the radially extending portion of the second side of the top wall and the outer margin of the other wall of the deflector together and to the braces connected to the other side wall of the throat, and each of the radially extending portions of the sides of the top wall being extended downwardly and outwardly relative to the longitudinal axis of the ventilator and terminating in a longitudinally extending flange for directing water and other weather elements away from the throat of the ventilator.

3. A roof ventilator including a throat having first and second side walls arnanged on the opposite sides of the longitudinally extending axis of the ventilator and bordering the opposite sides of a centrally disposed opening in the ventilator, oppositely disposed third and fourth side walls spaced outwardly from the longitudinal axis of the ventilator, the third of which has an upper portion which is inclined upwardly and inwardly toward the longitudinal axis of the ventilator and a lower portion which is inclined downwardly and inwardly toward the longitudinally extending axis of the ventilator and is connected in spaced relation to one side wall of the throat to provide a drain opening and the fourth of which has an upper portion which is inclined upwardly and inwardly relative to the longitudinal axis of the ventilator and has a lower portion which is inclined inwardly and downwardly relative to the longitudinal axis of the ventilator and which is connected in spaced relation to the second side wall of the throat to provide a second drain opening, a top wall having a central that portion and first and second side wall portions, the first side wall portion being inclined downwardly and outwardly relative to the longitudinal axis of the ventilator in a direction parallel to the upper portion of the third side wall of the ventilator and the second of which is inclined downwardly and outwardly in the opposite direction relative to the axis of the ventilator and which is substanitally parallel to the upper portion of the fourth side wall of the ventilator, a pair of spaced bafiies interposed between the upper portion of the third side wall of the ventilator and the downwardly and out wardly inclined portion of the first side of the top wall and being parallel thereto and substantially coextensive therewith and being spaced from said walls to form passages for the air on one side of the ventilator, a pair of spaced bafiles arranged between the upper portion of the fourth side wall of the ventilator and the second downwardly inclined portion at the top wall and being substantially parallel thereto and coextensive therewith and bein spaced therefrom to form passages for the air on the opposite side of the ventilator, a deflector haw'ng a central longitudinally extending portion which is substantially in alignment with the longitudinal axis of the ventilator and a first side wall extending upwardly and outwardly in one direction from the longitudinal axis of the ventilator to a position in which it engages the first side wall portion of the top wall and a second side wall extending upwardly and outwardly in the opposite direction from the longitudinal axis of the ventilator, and means for supporting said deflector, top wall, and baffles.

4. A roof ventilator as defined in claim 3 in which the means for supporting the top wall of the ventilator includes first braces connected to and extending upwardly from the side walls of the throat, spaced braces connected to the opposite side walls of the ventilator and the first bracing means to which the lower portions of the baffies are connected, and third spaced braces engaging and secured to the upper portions of the side walls, the upper portion of the baflles, and the upper portion of the top wall.

5. A roof ventilator having a centrally disposed longitudinally extending opening, oppositely disposed first and second side walls arranged on opposite sides of the longitudinal axis of the ventilator and spaced laterally outwardly from said opening, the upper portion of each of which side walls is inclined inwardly toward the axis of the ventilator, a top wall having a flat central portion, a downwardly and outwardly inclined first side wall portion which is substantially parallel to the inwardly inclined upper portion of the first side wall and a downwardly and outwardly inclined second side wall portion which is substantially parallel to the inwardly inclined portion of the second side wall, a baffle having upper and lower end portions arranged between and extending substantially parallel to the upwardly inclined portion of the first side wall and the first side wall portion of the top wall and being coextensive therewith and a bafile having its upper and lower ends arranged between and extending substantially parallel to the upwardly inclined portion of the second side wall and the second side wall portion of the top wall and being coextensive therewith, means for connecting the upper end portions of said baflles and the upper ends of the side walls together and to said top wall and spacing said baffles from each other and from the respective side walls, and means for connecting the lower ends of the baffles and the lower ends of the side wall portions of the top wall together and to the side walls and spacing the lower portions of the walls and baflles from each other to provide a rigid structure having comparatively large spaces for the egress of air.

6. A roof ventilator having a centrally disposed longitudinally extending opening, oppositely disposed first and second side walls arranged on opposite sides of the longiclined upper portion of the first side wall and a downwardly and outwardly inclined second side wall portion which is substantially parallel to the inwardly inclined portion of the second side wall, a plurailty of baffles, each having upper and lower end portions arranged between and extending substantially parallel to the upper portion of the first side wall and the first side wall portion of the top wall and being coextensive therewith and a plurality of baffies arranged between and extending substantially parallel to the upwardly inclined portion of the second side wall and the second side wall portion of the top wall and being coextensive therewith, means for connecting the upper end portions of said bafiles and the upper ends of the side walls together and to said top wall and spacing said bafiles from each other and from the respective side walls, and means for connecting the lower ends of the inwardly inclined bafiles and the lower ends of the side wall portions of the top wall together and to the respective side walls and spacing the lower portions of the walls and bafiies from each other to provide a rigid structure having comparatively large spaces for the egress of air.

7. A roof ventilator having a throat consisting of first and second walls disposed along the opposite sides of a central longitudinally extending opening, oppositely disposed third and fourth side walls arranged on opposite sides of the longitudinal axis of the ventilator and being spaced outwardly from the respective firs-t and second side walls of the throat, the upper portion of each of the third and fourth side walls being inclined upwardly and inwardly toward the longitudinal axis of the ventilator and the lower portion of the third side wall being inclined inwardly and downwardly toward the longitudinal axis of the ventilator and terminating in a free end portion arranged in proximity to the first side wall of the throat and being connected thereto to provide a narrow drain opening and the lower portion of the fourth side wall being inclined inwardly and downwardly toward the longitudinal axis of the ventilator and terminating in a free end portion arranged in proximity to the second side wall of the throat and being connected thereto to provide a second narrow longitudinal extending drain opening, a top wall having a flat central portion, a first downwardly and outwardly inclined side wall portion which is substantially parallel to the upwardly and inwardly inclined upper portion of the third side wall and a second downwardly and outwardly inclined side wall portion which is substantially parallel to the upwardly and inwardly inclined upper portion of the fourth side wall, a bafiie having its upper and lower end portions arranged between and extending substantially parallel to the upper portion of the third side wall and the first side wall portion of the top wall, and a bafi le having its upper and lower end portions arranged between and extending substantially parallel to the upward and inwardly inclined portion oflthe fourth side wall and the second side wall portion of the top wall, means for connecting the upper end portions of said bafiies and the upper ends of the side walls together and to the flat portion of the top wall and spacing the opposite ends of said baffles from each other and the respective side walls, means for connecting the lower ends of the bafiles and the lower ends of the side wall portions of the top wall together and to the third and fourth side walls and spacing the lower ends of the upper portions of the side walls and the baffies from each other to provide a rigid structure having comparatively large spaces for the egress of air and the upper portion of the third side wall, the first side wall portion of the top wall and the baflies arranged therebetween being inclined at such an angle that weather elements entering the ventilator on one side of the central fiat portion of the top wall will fiow downwardly upon the inwardly inclined portion of the third side wall of the ventilator and drain through the longitudinally extending opening between the third side wall and the first wall of the throat and weather elements entering the ventilator on the opposite side of the fiat central portion of the top wall will flow downwardly upon the inwardly inclined portion of the fourth side wall and drain through the narrow longitudinal opening between the fourth side wall and the second side wall of said throat.

8. A ventilator as defined in claim 7 including end walls and a downwardly inclined trough secured to each of the end walls, each of which extends over one of the downwardly inclined portions of one or" the outer side walls to drain water fiowing down each end wall on to one of the downwardly and inwardly inclined portions of a side wall of the ventilator.

9. A roof ventilator including a throat having first and second side walls arranged on the opposite sides of the longitudinally extending axis of the ventilator and bordering the opposite sides of a centrally disposed opening in the ventilator, oppositely disposed third and fourth side walls spaced outwardly from the longitudinal axis of the ventilator, each of which has an upper portion which is inclined upwardly and inwardly toward the longitudinal axis of the ventilator, a top wall having a central fiat portion, a first side wall portion which is inclined downwardly and outwardly relative to the longitudinal axis of the ventilator in a direction which is substantially parallel to the upper portion of the third side wall of the ventilator to provide a first air space between the upper portion of the third side wall and the first side wall portion of the top wall for the egress of air and a second side wall portion which is inclined downwardly and out wardly in the opposite direction relative to the longitudinal axis of the ventilator and which is substantially parallel to the upper portion of the fourth side wall of the ventilator to provide a second air space between the upper portion of the fourth side wall and the second downwardly inclined portion of the top wall for the egress of air, first and second baffies interposed in each of said air spaces with the battles in the first air space being parallel to and substantially coextensive with the upwardly and inwardly inclined portion of the third side Wall and the downwardly and outwardly inclined first side wall portion of the top wall and the battles interposed in the second air space being parallel to and substantially coextensive with the upwardly and inwardly inclined portion of the fourth side wall and with the second outwardly and downwardly inclined portion of the top wall, a deflector having a central longitudinally extending edge portion which is substantially in alignment with the longitudinal axis of theventilator and a firs-t side wall extending upwardly and outwardly in one direction from the longitudinal axis of the ventilator and terminating in a substantially radial portion extending over the first side wall of said throat and below the first side wall portion of the top wall and a second side wall extending upwardly and outwardly in the opposite direction from the longitudinal axis of the ventilator and terminating in a second radial portion which extends over the second side wall of said throat and below the second side wall portion of the top wall, means for supporting said deflector, top wall and said baflles, and the first and second bafiles be ing so arranged in said first air space that the space between the inwardly inclined upper portion of the third side wall and the first bafile in the first air space is greater than the space between the first and second baffies and the space between the first and second bafiles is greater than the space between the second battle and the downwardly inclined first top wall portion and the space between the upwardly and inwardly inclined portion of the fourth wall and the first bafile in the second air space is greater than the space between the first and second battles in the second air space and the distance between the first and second baflles in the second air space is greater than the distance between the second baflle and the downwardly inclined second wall portion of the top wall and the inclination of the walls of said deflector being such that a greater amount of air will flow upwardly from the ventilator between the first baffies of the air spaces and the third and fourth side walls than flow outwardly between the first and second bafiles of said air spaces, and the amount of air flowing outwardly from the ventilator between said bafiies in each of said air spaces is greater than the amount of air flowing upwardly between the second bafile of each air space and the downwardly and outwardly inclined portion of the top wall of each air space.

References Cited in the file of this patent UNITED STATES PATENTS OTHER REFERENCES Robertson Ventilators, January 6, 1956, pages 1, 3 and 5. 

1. A ROOF VENTILATOR INCLUDING A THROAT, OPPOSITELY DISPOSED FIRST AND SECOND SIDE WALLS SPACED OUTWARDLY FROM SAID THROAT AND ARRANGED ON OPPOSITE SIDES OF THE AXIS OF THE VENTILATOR, THE UPPER PORTION OF EACH OF WHICH IS INCLINED INWARDLY TOWARD THE AXIS OF THE VENTILATOR SO THAT AIR PASSING UPWARDLY AGAINST THE OUTER SIDES OF THE UPPER WALL PORTIONS AID IN CAUSING THE EGRESS OF AIR FROM THE BUILDING, A TOP WALL INCLUDING A FLAT WALL PORTION, A DOWNWARDLY AND OUTWARDLY INCLINED FIRST SIDE WALL PORTION WHICH IS SUBSTANTIALLY PARALLEL TO THE INWARDLY INCLINED UPPER PORTION OF THE FIRST SIDE WALL AND A DOWNWARDLY AND OUTWARDLY INCLINED SECOND WALL PORTION WHICH IS SUBSTANTIALLY PARALLEL TO THE INWARDLY INCLINED UPPER PORTION OF THE SECOND SIDE WALL, BAFFLE MEANS ARRANGED BETWEEN AND EXTENDING SUBSTANTIALLY PARALLEL TO THE INWARDLY INCLINED UPPER PORTION OF THE FIRST SIDE WALL AND THE FIRST SIDE WALL PORTION OF THE TOP WALL AND BEING SUBSTANTIALLY COEXTENSIVE THEREWITH, AND BAFFLE MEANS ARRANGED BETWEEN AND EXTENDING SUBSTANTIALLY PARALLEL TO THE INWARDLY INCLINED UPPER PORTION OF THE SECOND SIDE WALL AND THE SECOND SIDE WALL PORTION OF THE TOP WALL AND BEING SUBSTANTIALLY COEXTENSIVE THEREWITH, SAID BAFFLE MEANS AND SIDE WALL PORTIONS BEING SPACED AT A SUFFICIENT DISTANCE FROM EACH OTHER TO PROVIDE COMPARATIVELY LARGE PASSAGES FOR THE EGRESS OF AIR ON EACH SIDE OF THE LONGITUDINALLY EXTENDING AXIS OF THE VENTILATOR BUT BEING IN SUFFICIENTLY CLOSE RELATION TO EACH OTHER TO DEFLECT RAIN AND OTHER WEATHER ELEMENTS AWAY FROM THE THROAT OF THE VENTILATOR,, AND AN AIR DEFLECTOR HAVING A LOWER LONGITUDINALLY EXTENDING EDGE PORTION SUBSTANTIALLY CENTRALLY OF THE THROAT, A FIRST SIDE WALL INCLINED UPWARDLY AND OUTWARDLY TO A POSITION BELOW THE FIRST DOWNWARDLY INCLINED PORTION OF THE TOP WALL FOR DIRECTING AIR TOWARD THE EGRESS PASSAGES ON ONE SIDE OF THE AXIS OF THE VENTILATOR, AND A SECOND SIDE WALL PORTION WHICH IS INCLINED UPWARDLY AND OUTWARDLY TO A POSITION BELOW THE SECOND DOWNWARDLY INCLINED PORTION OF THE TOP WALL FOR DIRECTING AIR TOWARD THE EGRESS PASSAGES ON THE OPPOSITE SIDE OF THE AXIS OF THE VENTILATOR. 